Re: Missing Send an Approval Email
Hi @Anonymous,
Do you use the "Send approval email" action of Office 365 Outlook connector within your flow?
Yes, the "Send approval email" action has been removed from the Outlook connector, you could consider take a try to use the "Send email with options" action within your flow as an alternative way. I have made a test on my side and please take a try with the following workaround:
The flow works successfully as below:

In addition, you could also consider take a try to add a "Start an approval" action (Modern approval) within your flow, please take a try with the following workaround:
Best regards,
Kris